Breaker roll



July 16, 1940. J. BAXTER, JR 2,208,316

BREAKER ROLL V Fil ed Jan. 13, 1957 LEN- ,. A 2 4 I/II INVENTOR M raATTORN EY Patented July 16, 1940 PATENT OFFICE BREAKER. ROLL JosephBaxter, Jr., Franklin, Ohio, allignor to The Black-Olawson Company,Hamilton, Ohio,

a corporation of Ohio Application January 13, 1937, Serial No. 120,8

11 Claims.

This invention relates to paper making machinery and more particularlyto breaker or beater rolls for working paper stock or the like, thepresent application being a continuation in part 5 of my priorapplication entitled Breaker roll, Se-

rial No. 664,881, filed April '1, 1933.

One object of the invention is the provision of a breaker roll or thelike which is of simple construction, which possesses great strengthwithout excessive bulk, is durable, and which is economically producedby the permanent assembly or fabrication of commercially availablematerials.

Another object of the invention is the provision of abreaker roll whichis of all steel construction, and in which the several parts arepermanently welded together into a single integral structure.

Another object of the invention is the provision of a breaker roll orthe like having end plates, fly bars and spacer members all weldedtogether and providing a sealed chamber within the roll so that waterand pulp cannot find their way into the roll interior.

Another object of the invention is the provision of a breaker roll orthe like having fly bars which are welded rigidly and permanently inplace on the end plates, the fly bars being provided with detachablewear members which can be readily removed and replaced when worn.

" .Other objects and advantages of the invention will be apparent fromthe following description, the accompanying drawing and the appendedclaims.

In the drawing, which discloses preferred em- 35 bodiments of theinvention- Fig. 1 is a plan view, partly in section, of a breaker rollconstructed in accordance with this invention;

Fig. 2 is an end view of Fig. 1 with some parts broken away forclearness of illustration;

' Fig. 3 is a fragmentary view taken similarly to Fig. 1 and showing amodified construction;

Fig. 4 is a section on the line 4-4 of Fig. 3; and

Fig. 5 is a section on the line 5- -5 of Fig. 3.

Breaker rolls or the like such as are used in beating, breaking up orpulping paper stock in the manufacture of paper pulp have heretoforebeen so constructed that the'fly bars, or beater bars, are detachablyheld on a rotatable drum like support with removable spacers between thefly bars, the spacers servingto hold the fly bars in place and in theirproper spaced relation. Such spacers have therefore been so madeas toaccurately fit the sides of the -fly bars, requiring the opposite sidesof the spacers to be made with the necessary (Cl. 9H2) slope andrequiring the spacers to be of an exact size in order to flrmly secureall of the fly bars in place. In a construction such as this it will beapparent that the various parts must be accurately and carefully made orthe fly bars will 5 not be rigidly held, and if the fly bars becomeloosened great damage may be caused by striking against other machineparts with which the beater roll cooperates.

The present invention represents a radical de- 10 parture from the priorconstructions of breaker or beater rolls. As herein set forth, thebreaker or beater roll is fabricated into an integral structure fromreadily available material. Fly bars which extend in a generally radialdirection are welded directly to spaced end plates of steel or the like,which are securely attached, preferably by welding, to a central shaft.Filler pieces, of a proper shape to be received between adjacent flybars, are also welded to the end plates and to the fly bars. Thus thevarious parts of the roll are all of simple form and the roll may becheaply and quickly made with little machining.

The structure thus formed is very rigid and durable and the loosening ordisplacement of the component parts in service is impossible.

Referring more particularly to the drawing by reference numerals l0designates a central steel carrying shaft which may have a diameter ofthe order of ten inches in a large roll. On the shaft are axially spacedannularly extending end members of plates II which serve as the supportfor the fly bars l2.

The end members ll stand perpendicularly to the shaft and, as shown, arepermanently attached thereto by welding as indicated at I4. Tofacilitate the welding of the end members H to the shaft, the latter isprovided, for each end member, with an outwardly extending flange theperipheral portion of which is welded to the inner edge of the endmember. Thus the heating of a large amount of metal on the shaft bodyduring the welding operation is unnecessary, the heat being ratherlocalized in only the flanged portion. The fly bars l2 extend radiallybetween the end members II and are attached permanently in position bywelding. These bars, like the other parts of the roll structure, aremade from commercially available stock steel or the like in such formthat butlittle work is necessary to prepare the parts for use. In thecase of the fly bars, which may be made in the construction shown inFig. 1 from a steel having high resistance to wear, it is only necessaryto cut them from flat bar stock to a proper length and finish the endsfor engagement with the roll end members.

The spaces between adjacent fly bars II are closed at a suitabledistance from the roll periphery by filler members 15 which are formedof steel plate. plates as indicated or they may be curved sections. Theyare attached to the roll ends and to the fly bars by welds as indicatedat l6. An additional support for the fly bars may beprovided by anintermediate member it which is shown intermediate the end member II.The shaft, adjacent its point of connection to the intermediate memberi8 is provided with a flange 23 which projects out from the main bodyportion of the shaft far enough to prevent the, heat of the weld fromsubstantially afiecting the character of the steel in the body portionof the. shaft, during the welding'operation. The member 18 is welded tothe peripheral portion of this flange. The periphery of the intermediatemember I8 is shaped to conform to the positioning of the filler membersl and, as shown, it is notched at 2D to receive the inner edges ofthebars I! which extend inwardly of the point of attachment of thefiller members to the bars. The intermediate member 18 and the bars l2are welded together where they on sleeves 26 of a suitable material toserve for engagement with the packing at the sides of the tub withinwhich the roll operates. Roll end portions 21 are finished for mountingwithin bearings, and for the attachment of driving means.

Each end member may be constructed of one or a plurality of plates. Inthe form of construc-- tion shown in Figs. 1 and 2 the end members IIare each made up of two adjacently related plates 29 and 33. The endplates 29, which lie toward the center of the roll, may be notched asindi-- cated at 30 to the full depth of the fly bars I2 and thus serve.as a means of firmly locating the fly bars in the assembly. 'I'heouterplates 33 may be constructed as plain discs which are attached to theouter sides of the plates 29 in which case the bars l2 terminate flushwith the outer faces of the plates 23. 'As shown, the bar ends areformed so that they have projecting end portions 3| of a widthsubstantially half of the total depth of the bars l2, and extendingbeyond the plates 29 an amount equal to the thickness of the outer endplates 33. Also, the outer end plates 33 have openings 34 within whichthe bar extensions 3| are received. The outer plates 33 thus serve asadditional anchorage'for the fly bars and add to the strength of theunit. Bangor irons 35 may be attached, as shown, preferably by welding,to the outer sides of the end members II.

The general arrangement of parts shown in Fig. 3 is similar to theshowing of Fig. 1 except that the fly bars I! terminate at the innerfaces of the end members II. A single end plate may be used at each endof the roll, as shown in Fig.

These filler pieces may be flat -mounted'on the outer plates ll'.

3, welded to a finished portion 24f on the periphery of a flange on theshaft Ill. The plates I I at the end of the roll with the intermediatemember l8, which is welded to a flange at the center of the shaft, serveto support the fly bars and the filler plates l5 rigidly and permanentlyby welded connections along'the various lines of contact.

The ends of the fly bars thus have a welded connection extending alongtheir lines of engagement with the plates H, and welded connectionsextending along their lines of engagement with the filler plates l5.Bangor irons 35' are shown These bangor irons are welded to the plates.

As the fly bars l2 may, after some period of continued use, become wornand somewhat rounded or blunt at the forward edges of the bars and thuslosesomeof their efficiency as breaker members, they may be providedwith removable wear members, retaining the advantages of an integralroll construction, for the most part, but giving theadded advantage ofpermitting replacement of the wear members. These wear members are shownin Figs. 3 and 5 as flat steel plates bolted to the forward sides of thefly bars and having a length substantially equal to the fly bar length.The outer edges of the wear members, to which the reference numeral 38has been applied, project a little distance beyond the outer ends of thefly bars so that all the wear is applied to the wear members. Theconnection between the wear members and the fly bars is such that thewear members can be readily re moved without affecting the unitaryattachment between the shaft, the fly bars, the end plates and thefiller members. This connection moreover'is such that the wear memberscan be turned end for end in order that the edge of the wear memberswhich become dulled after a period of time may be reversed with anotheredge of the member. With the symmetrical arrangement of the holes 39 inthe wear members and in the fly bars, the wear members can be turnedupside down as well as end for end in orderto give four edges which canbe used successively.

On the side plate II as shown in Fig. 3, the bangor iron is welded at anend of the roll for cooperation with the tank sides. This bangor iron ispreferably an angle iron 07' Jar having a removable wear plate 40connected to it by rivets or bolts in a detachable manner. As shown theconnection is by means of countersunk screws 4|. The outer edge of thebangor'ironwear member projects a little beyond theouter end of theangle iron and assumes all of the wear during operation. The wearingsurface of the bangor iron is thus readily replaceable although theadvantages of the inner integral connection between the bangor iron andthe end plates of the beater roll are retained.

In accordance with the present invention, the breaker or beater roll inwhich the fly bars and spacer plates are welded along their lines ofconnection with one another and with the end plates of the roll providesa construction in which the weight of the roll is more or lessconcentrated nearthe roll periphery so that the momentum of the roll islarge. Moreover with the various parts welded together the interior ofthe roll is a sealed chamber into which water and pulp can find noentrance. In the prior constructions the interior of the rolls arerapidly filled or partially filled with water or pulp and it isnecessary therefore to supply the roll with suflicient power to overcomethe stopping effect of the liquid which it contains. Moreover inaccordance with the present invention the roll possesses great strengthin that all of the parts are jointed to form a rigid integral assembly.The roll is readily fabricated, as the individual parts that constitutethe assembly are readily available in materials that can be prepared foruse with but a, relatively small expenditure for labor. As the rollbody-is of integral construction no attention will be required, and nodamage can result from parts becoming loosened in service during theentire life of the roll. The roll of the present invention in which theedges of the fly bars themselves are effective in breaking the materialtreated possesses additional operating savings over that obtained in theuse of other breaker rolls in that it can be produced so economicallythat it may be discarded when it has finally worn out in service, andwhen the fly bars are equipped with removable wear members the lattercan be very readily removed and replaced when worn, or may be merelychanged by reversing end for end to bring an unworn surface edge intouse.

While the forms of apparatus herein described constitute preferredembodiments of the invention, it is to be understood that the inventionis not limited to these precise forms of apparatus, and that changes maybe made therein without departing from the scope of the invention whichis defined in the appended claims.

What is claimed is:

l. A breaker roll comprising a shaft, fly bar supporting meanscomprising spaced disk like members perpendicularly related to andpermanently attached to said shaft, said members having peripheralnotches therein, radial fly bars positioned within said notches andextending between said members, said fly bars being positioned so thatthe outer edges thereof lie substantially flush with the periphery ofsaid members, and having end extensions of radial width less than thefly bar depth extending beyond the notched supporting members, and adisk like member attached exteriorly of each of said first mentionedmembers and having openings therein for interengagement with the fly barextensions.

2. A breaker roll comprising a shaft, axially spaced end plates weldedto said shaft, radially extending flat fly bars positioned between saidplates and welded thereto, the outer edges of said fly bars beinglocated substantially flush with the periphery of said plates, and afiller plate positioned between each pair of bars and welded to said endplates and to the adjacent sides of each supporting means comprisingaxially spaced disk like members perpendicularly related to andpermanently attached to said shaft, said members having annularly spacedopenings therein radially positioned with respect to said shaft andadjacent the peripheries of said members, fly bars extending betweensaid disk like members, said fly bars being positioned so thatthe outeredges thereof lie substantially flush with the periphery of saidmembers, and said fly bars having end extensions interfltting said disklike members at the openings therein.

4. A breaker roll of the character described for use in paper makingcomprising a shaft, said shaft having flanges extending outwardly fromthe shaft a distance commensurate with the width of the flanges toprevent rapid loss of welding heat applied to the peripheral portions ofthe flanges, axially spaced annularly extending fly bar supportingplates having a thickness commensurate with the width of said flanges,the inner portions of said plates having a welded connection to theperipheral surfaces of said flanges, radially extending flat fly barspositioned between said plates with their ends engaging said plates andwith the peripheral portions of said bars being substantially flush withthe peripheries of said plates, welded connections between said platesand fly bars, said welded connections extending along the ends of thefly bars to the outer edge thereof, and a flller plate positionedbetween each pair of fly bars and having welded connections to saidsupporting plates and having welded connections extending along theirlines of engagement with said fly bars.

5. A breaker roll of the character described for use in paper makingcomprising a shaft, axially spaced annularly extending supporting plateson said shaft, fly bars extending between said plates and having weldedconnections along substantially radial lines of engagement with saidplates. said fly bars having their outer ends substantially flush withthe peripheries of said plates and said welded connections extending tothe outer ends of the fly bars and the plates, said fly bars having boltholes therein symmetrically spaced on opposite sides of a central planeextending transversely through the shaft axis, removable wear membershaving bolt holes adapted for cooperation with the holes in the fly barsfor attachment of said wear members in any of a plurality of reversedpositions with the outer edges of the wear members projecting beyond theouter edges of the fly bars, and bolts extending through said holes andconnecting said wear members and fly bars.

6. A breaker roll of the character described for use in paper makingcomprising a shaft, axially spaced annularly extending supporting plateson said shaft, fly bars extending between said plates and having weldedconnections along their lines of engagement with said plates, said flybars having their outer ends substantially flush with the peripheries ofsaid plates and said welded connections extending to the outer ends ofthe plates and the outer ends of the fly bars, said fly bars having boltholes therein symmetrically spaced on opposite sides of a central planeextending transversely through the shaft axis, removable wear membershaving bolt holes adapted for cooperation with the holes in the fly barsfor attachment of said wear members in any of a plurality of reversedpositions with the outer edges of the wear members projecting beyond theouter edges of the fly bars, bolts extending through said holes andconnecting said wear members and fly bars, and a filler plate extendingbetween each pair of fly bars and having welded connections to saidsupporting plates and having, welded connections extending along theirlines of engagement with said fly bars.

'7. A breaker roll of the character described for use in paper makingcomprising a shaft, axially spaced annularly extending supporting plateson said shaft, fly bars extending between said plates and having weldedconnections along their lines of engagement with said plates, said flybars having their outer ends substantially flush with the peripheries ofsaid plates and said welded connections extending to the outer ends ofthe plates and the outer ends of the fly bars, said fly bars having boltholes therein symmetrically spaced on oppositesdies of a central planeextending transversely through the shaft axis, removable wear membershaving bolt holes positioned for cooperation with the holes in the flybars, the holes in the wear members having a symmetrical spacing onopposite sides of the longitudinal axis of each wear member forattachment of said wear members in any of four reversed positions withthe outer edges of the wear members projecting beyond the outer edges ofthe fly bars, and bolts extending through said holes and connecting saidwear members and fly bars.

8. A breaker roll of the character described for use in paper makingcomprising a shaft, axially spaced fly bar supporting plates havingwelded connections to said shaft; fly bars extending between said platesand welded thereto along their lines of engagement therewith, said flybars having their outer ends substantially flush with the rims of saidplates and said welded connections extending to the outer ends of theplates and to the outer ends of the fly bars, filler members extendingbetween said plates and each pair of adjacent fly bars and welded tosaid plates and having welded connections along their lines ofengagement with said fly bars to connect the same rigidly in apermanently joined sealed hollow assembly, wear members detachablybolted to said fly bars and projecting beyond the outer edges of the flybars, a substantially radially extending bangor bar having a permanentwelded connection on one of said plates, and a wear member detachablybolted to said bangor bar and projecting in the direction of the shaftaxis from said banger bar.

9. A breaker roll of the character described for use in paper makingcomprising a shaft, axially spaced disk-like fly bar supporting plateson said shaft, fly bars extending between said plates with their outerends substantially flush with the peripheries of the plates said flybars and supporting plates having an abutting engagement alongsubstantially radial lines, and a'substantially flat metal filler plateextending between the supporting plates and each pair of adjacent flybars with lines of abutting engagement with the supporting plates andthe fly bars, said supporting plates, fly bars, and flller plates havingrigid weld connections to one another with welded connections extendingoutwardly to the outer edges of the fly bars along the lines ofengagement of the ends of the fly bars with the supporting plates andwith welded connections extending along the lines of engagement of the Afly bars with the flller plates and with welded connections between thefiller plates and the supporting plates.

10. A breaker roll of the character described for use in paper makingand fabricated from parts permanently interconnected into a singleintegral construction, comprising a shaft, spaced disk-like fly barsupporting end members perpendicularly related to said shaft andpermanently welded thereon, fly bars extending between said end membersand permanently attached thereto by welded connections extendingoutwardly along the lines of engagement of the fly bars with the endmembers, the outer edges of the fly bars being substantially flush withthe end plate rims, a disk-like fly bar support permanently welded tosaid shaft between the end members, said support having peripheralnotches receiving said fly bars and permanently attached thereto, andsubstantially flat filler plates positioned exteriorly of theintermediate support and extending between and abutting against the endmembers and having welded lines of connections to the end members, eachflller, plate abutting against adjacently related fly bars with weldedlines of connection therewith and providing a roll closure of lessdiameter than the roll diameter.

11. A breaker roll of the character described for use in paper makingcomprising a shaft, axially spaced annularly extending fly barsupporting plates on said shaft, fly bars extending between saidplateswith the outer ends of the fly bars substantially flush with theouter rims of the plates, welded connections extending along the linesof engagement of the fly bars with the plates and extending to the outerends of the plates, and a substantially flat metal flller plateextending between and abutting directly with the supporting platesbetween each pair of adjacent fly bars, said filler plates having weldedconnections along their various lines of contact with the fly bars andwith the supporting plates and providing a sealed chamber within thesupporting plates and filler plates.

JOSEPH BAXTER, JR.

